AST-1410 Use SolutionTensor in Solvers
Simplify Solvers a little: Using a SolutionSpan is only needed when calling Constraint::Apply. Everywhere else we can use the actual SolutionTensor object.
Also simplify some tests.
Edited by Maik Nijhuis
Simplify Solvers a little: Using a SolutionSpan is only needed when calling Constraint::Apply. Everywhere else we can use the actual SolutionTensor object.
Also simplify some tests.